What is the wrong in this utl_file

Question

declare
     f utl_file.file_type;
     --v_str varchar2(32000);
     TYPE TAB_COL IS TABLE OF VARCHAR2(30);
     V_TAB_COL TAB_COL;
     FILE_NAME VARCHAR2(32000);
     V_LEN NUMBER;
     V_TOT_SIZE VARCHAR2(32000);
     V_TOT_SIZE1 VARCHAR2(32000);
     V_TOT_SIZE2 VARCHAR2(32000);
SQL_STR VARCHAR2(32000);
     lv_loop_counter NUMBER;
begin
select COLUMN_NAME BULK COLLECT INTO V_TAB_COL FROM ALL_TAB_COLUMNS WHERE
     TABLE_NAME='CN_SMSC' AND OWNER='TEST';
     FOR I IN V_TAB_COL.FIRST..V_TAB_COL.LAST
LOOP
          FILE_NAME:=FILE_NAME||','||V_TAB_COL(I);
--DBMS_OUTPUT.PUT_LINE(FILE_NAME);
/*lv_loop_counter := 1;
WHILE (lv_loop_counter < LENGTH(FILE_NAME ))
LOOP
DBMS_OUTPUT.PUT_LINE(SUBSTR(FILE_NAME ,lv_loop_counter,255));
-- DBMS_OUTPUT.PUT_LINE(FILE_NAME);
lv_loop_counter:= lv_loop_counter + 255;
END LOOP; */
END LOOP;
     SELECT LENGTH(FILE_NAME) INTO V_LEN FROM DUAL;
     SELECT SUBSTR(FILE_NAME,2,V_LEN) INTO V_TOT_SIZE FROM DUAL;
     SELECT REPLACE(V_TOT_SIZE,',',',S.') INTO V_TOT_SIZE1 FROM DUAL;
     V_TOT_SIZE2:='S.'||V_TOT_SIZE1;
SQL_STR:=' DECLARE      f utl_file.file_type; BEGIN
f := utl_file.fopen('||'''E:\NETWORK_ELEMENT_ID_KEY'''||','||'''A.txt'''||','||'''W'''||');
for s in (select '||V_TOT_SIZE ||' from cn_smsc)
loop
--V_TOT_SIZE2 holds list of column name like s.col_name1,s.col_name2
utl_file.put_line(f, '||V_TOT_SIZE2 ||' );
end loop;
     utl_file.fclose(f);
END;';
lv_loop_counter := 1;
WHILE (lv_loop_counter < LENGTH(SQL_STR ))
LOOP
DBMS_OUTPUT.PUT_LINE(SUBSTR(SQL_STR ,lv_loop_counter,255));
lv_loop_counter:= lv_loop_counter + 255;
END LOOP;
-- DBMS_OUTPUT.PUT_LINE(SQL_STR);
EXECUTE IMMEDIATE SQL_STR;
end;
it return :
ORA-06550: line 6, column 9:
PLS-00306: wrong number or types of arguments in call to 'PUT_LINE'
ORA-06550: line 6, column 9:
PL/SQL: Statement ignored
ORA-06512: at line 57
n.b: i want to make it dynamic

Answer 1

You call utl_file.put_line with a list of fields as separate parameters, that is obviously wrong. Consider to have a look on your generated sql (uncomment dbms_output call at the bottom of your block) and compare with utl_file package specification .
Best regards
Maxim